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Distribution of bacteria and nitrogen-cycling microbial communities along constructed Technosol depth-profiles
- Source :
- Journal of Hazardous Materials, Journal of Hazardous Materials, Elsevier, 2012, 231-232, pp.88-97. ⟨10.1016/j.jhazmat.2012.06.041⟩, Journal of Hazardous Materials, Elsevier, 2012, 231-232, pp.88-97. ⟨10.1016/j.jhazmat.2012.06.041 ⟩, Journal of Hazardous Materials, Elsevier, 2012, 231-232, pp.88-97. 〈10.1016/j.jhazmat.2012.06.041 〉
- Publication Year :
- 2012
- Publisher :
- HAL CCSD, 2012.
-
Abstract
- Technosol construction through assemblage of treated soil and recycled wastes is an innovative option for the restoration of degraded lands and re-use of industrial wastes. Recent studies have evidenced that Technosols could support soil functions such as primary production but the knowledge about other ecosystemic services, such as nutrient cycling, is limited. We investigated how the total bacterial community and key functional microbial communities involved in nitrogen cycling were influenced by the depth and type of Technosol. We found that despite being artificially constructed, Technosols exhibited a gradual change in microbial activity and abundance along the soil profile. Both nitrification and denitrification rates decreased with increasing depth as previously observed in other soil systems. Potential denitrification and nitrification were correlated with Technosol physico-chemical properties but also with abundances of nirS denitrifiers and bacterial amoA gene, respectively. The correlation between nitrification rates and bacterial ammonia-oxidizers suggests that bacteria are driving nitrification in Technosols. A-RISA fingerprints showed a distinct community structure along different Technosol layers. Technosol properties affected denitrification strongly than nitrification underlining the importance of better understanding the microbial communities in Technosols to maximize their potential for nutrient cycling, an essential ecosystem function.
- Subjects :
- Nutrient cycle
Environmental Engineering
Denitrification
Health, Toxicology and Mutagenesis
[SDV]Life Sciences [q-bio]
Microbial Consortia
soil depth
contaminated soils
Technosol
12. Responsible consumption
Soil
03 medical and health sciences
Soil functions
quantitative pcr
Environmental Chemistry
Recycling
Waste Management and Disposal
Nitrogen cycle
Soil Microbiology
030304 developmental biology
2. Zero hunger
0303 health sciences
ammonia-oxidation
denitrification
[ SDV ] Life Sciences [q-bio]
Ecology
04 agricultural and veterinary sciences
Nitrogen Cycle
15. Life on land
Pollution
nitrification
13. Climate action
040103 agronomy & agriculture
0401 agriculture, forestry, and fisheries
Soil horizon
Environmental science
Nitrification
Soil microbiology
Subjects
Details
- Language :
- English
- ISSN :
- 03043894 and 18733336
- Database :
- OpenAIRE
- Journal :
- Journal of Hazardous Materials, Journal of Hazardous Materials, Elsevier, 2012, 231-232, pp.88-97. ⟨10.1016/j.jhazmat.2012.06.041⟩, Journal of Hazardous Materials, Elsevier, 2012, 231-232, pp.88-97. ⟨10.1016/j.jhazmat.2012.06.041 ⟩, Journal of Hazardous Materials, Elsevier, 2012, 231-232, pp.88-97. 〈10.1016/j.jhazmat.2012.06.041 〉
- Accession number :
- edsair.doi.dedup.....f89dcff8410aa21a69a0085dd4a64fe2